Tightening and sealing device



April 18, 1933. D. A. BRADLEY 1,904,914

TIGHTENINC- AND SEALING DEVICE Filed Nov. 13, 1931 5 Sheets-Sheet 1 inwe 71 f0 WWZ ZM April 18, 1933. D. A. BRADLEY 1,904,914

I TIGHTENING AND SEALING DEVICE I Filed NOV. 15, 1931 5 Sheets-Sheet 26' 6- A 45 Inventor April 18,1933. D BRADLEY 1,904,914

TIGHTENING AND SEALING DEVICE Filed Nov. 13, 1931 5 Sheets-Sheet 3 N h 9h we II -J 741 i \"'ll| 2 l'vvezzrorx April 18, 1933. D BRADLEY1,904,914

TIGHTENING AND SEALING DEVICE Filed NOV. 13, 1951 5 Sheets-Sheet 4 Fagc5 .4 1

April 18, 1933. D. A. BRADLEY 1,904,914

TIGHTENING' AND SEALING DEVICE Filed Nov. 13, 1951 5 Sheets-Sheet 5Patented Apr. 18, 1933 umrEo-"STA DANIEL AMBROSE BRADLEY, ornonnoNQENGLANDQAsS GN R ,To nsues-rema OF'LONIZON, ENGLAND, ABRITISHCOMPANY v 7 stemming snnmne Device t 3 Application filed November IQBI Ser ial' No. 574,900; and in Great Britain November 20,

This invention'is forimprovements in ori relating to a tightening devicefor use-in tightening a band, strapor the lik'efitha t is looped about"a box or package and 5 to'have its ends secured together by afclip orfastener to which primarily one. end 'por tion of the band isattached,which devicev is of the type comprisingtensioning means," for example apawl tensioning-device, to

is which the second end portiomofjthe band extending across the clip isto be attached; and a support for the tensioning means hav-Q ing I anabutment arranged to take up; i the reaction due to the pullof the tensioning.

15 means on the band and hold the clip against be carried by; a levermovement of the band whilst-the clipis ing secured inposition onthebandl The present inventionhasjfor'bneof its I objects to provide animproved construc f tion of tightening and sealing deviceof the typedescribed that readily permits, a

clip" or fastener attached; to one endof the band to have thesecond endsecured thereto whilst "the band is held UTIdQQ Q l 25 sion closelyaround the box or packagejand whilst the clip lies flat' against a. thebox orpackage.

According to the 1 invention in that a face of the support which" is-tolie against a side of the-box or; package has in it. a recessforrecelvmgythef clip "In "a position in which it lies close tosaid'side M of thebox or package and parallelwithland' close to thesaidsecond-endportionof the band. Owing to this construction of thedevice the band is strapped tightly the box or package with the clip: inthat p0;

I sition in which it is to remain after the or fastener is preferablyo'fthe typ'eiwhei e in a plate formingits body has lugs jarranged to befolded down on thetbanid and clamp it securely on the plate. "Severalforms of such a fastener are described in the co-pendi'ng patentapplication SerialNo. 57 L901 on which Patent Nof has f been granted.

. :tt'iaanie device of the type described ischaracterized.

plunger movable 7 According to a feature of the inventionthesaidabutment is constituted an end port that Whilstmaintainirigthetension on" v theband it can swing along a semi-circularb wall of the recess lyingtransversel yof the" path whereof the:axis-is'at theclipan'd lies acrossthe width of the band."v I UThe'support'for the tensioning means may consist of one or morearcuateguidesWfor it spaced apartf These guides "may consti tuteafbearing' for the tensioningmeans arm arranged to swing about fhem I111a Z up; 5 Accordingto another feature of'theinventicvn positioning"means for the box" tr package is arranged on the support 'for locatingthe" clip carried by thebox or p 01: age against the said'abutment. 1

The invention also provides a tensioning device asset forth above incombination with sealing means mounted on the support-for closing theclip on the-band whilst the'ilattoris under tension; w Conveniently thesealing means comprises at plunger movable in a hole inthe supporttowards and awayfrom the clip; and afl'ever pivoted on the support andarranged fto reciprocate the plunger. v I -Accord1ng to a furthe -f t ofthe in; W e11l31011 the. sealing means gompris'esga.

ina "ho'le in' the supporttowards and away from the clip, and a leverpivoted on the support and arranged tdreQipro'catethe plungerfi L'The'sealing means may have-actuating means arranged to be operated thetenf" s ngx o by m an f r em leifef cam, carried thereby, as t isgbeing'swung on said support and approaches its said second'endposition.p I ".Acordin'g to a further feature invention t a cutting deviceisarra'nged to severthe'flsecond end portion ofthe band',i

for;example automatically, whenfthe I sroning means ls'nearzor at itss'econcl' end.

of l

claims.

Several embodiments of the invention are diagrammatically illustrated byway of example in the accompanying drawings,

. broken lines, and

invention, and

Figure 1 is a side elevation showing one form of tightening deviceaccording to the invention, comprising sealing means and a cuttingdevice for the band;

Figure 2 is a vertical section taken on the bent line 22 in Figure 1;

Figure 3 is a plan view of the tightening.

device as shown in full lines in Figure 1;

Figure 4 is a plan view of the tightening device as shown in Figure 1when the tightening means is in the position shown in Figure 5.is aillustrating the operation of the sealing means; f

Figure 6 is 'a side elevation of another form of tightening deviceaccording to the Figure 7 is a plan view thereof, part of the tighteningmeans being shown broken away for the sake of clearness;

Figure 8 is-a side elevation showing another form of tightening deviceaccording to the invention;

Figure 9 is a plan view-thereof;

Figure 10 is-a vertical section taken on i the line 101O inrFigure 9;

Figure 11 is a plan view of the sealing.

means, and

Figure 12 is a horizontal section through part of the sealing meanstaken on the line 12-12 in Figure 10.

Like reference characters designate like or similar parts in all theviews.

. Referring first to Figures 1 to 5, a circular support designatedgenerally .15 for the tensioning means aforesaid comprises two annularwalls 16, 17 spaced apart in parallel relation to provide between themat one sideof the support a deep gap 18 extending inwards to a planelying substantially along a diameter of the support. .At the oppositeside of the support, hereinafter referred to as the base portion of thesupport, the walls 16, 17 are secured firmly together, and havefashioned in them a relatively wide positioning slot 20. which issituated at right angles to said plane and extends from the bottom ofthe gap 18 to the periphery of the base portion. This slot 20 serves toreceive an end or side of the box or package carrying the band to oneend of which is attached the clip lying flat diagrammatic plan viewagainst the end or side of the box or package. In Figure 1 the packageis indicated at 22 and the band at 23 in broken lines, while the Figure5 shows the same in full lines and the clip 24.

At the bottom of the slot 20 there is a recess 26 .for receiving theclip 24. This recess is formed by-two parts 27, 28, '(see Figure 2), onein each of two middle por- -tions'29, 30 of the side walls ofthesupport.

Two screws 32, 33, one in each face 27, 28, adjustably secure inposition two blocks 34, which are adjustable towards and away from oneanother for accommodating clips of different width, and have each ashoulder providing an abutment 36 for the clip.

Each wall 16, 17 has in-its inner side face an annular groove 38, 39,respectively, and

an arcuate shoe 40 having two pivot pins 42, 43, each carrying anantifriction roller 44, 45, respectively, is mounted to travel. aroundthe support from one side to the other, W1tl1 the rollers running in thegrooves 38, 39. This shoe 40 has a radial bracket 48vcarrying a spindle49, whereof one end lies in the plane of said gap 18 and has fixed on ita boss 50 having a cruciform slot 51 for receiving the second endportion of the band. This spindle 49 is part of pawl and ratchettensioning means 54, 5 5, 56 comprising an arm 57 that is carried by thespindle 49 and, when rocked about the latter, serves to tighten the bandabout the package. A handle member 59 secured to the shoe'40 serves tocarry the entire tightening device.

.Eachofthewalls 16, 17 has on its outer side near the middle a boss 60having a hole 61 slanting downwards towards the said recess; 26 forreceiving the clip. Two springcontrolled plungers 64 are provided, oneslidable in each hole, for working on and closing the clip from oppositesides thereof., Each plunger is guided by a pin 66 in a slot 68 in theboss, to which pin 66 one end of a compression spring 70 is connected,the other end thereof being anchored to the support 15. Each bosscarries a lever 72 having atone end a spherical head 73 bearing on .aplunger 64,7and at its other end an anti-friction roller 74. When theselevers 72 are rocked by a wedge-shaped cam 75 of the shoe 4O co-actingwith the rollers 74% described hereinafter the plungers 64 aredriveninwards, as indicated in Figure 5, to clench the clip on the'band.

vWhen-the tensioning means is in the position shown in full lines inFigure 1 at one side of the support, the side wall 76 of saidpositioning slot 20 at the same side constitutes a guide face arrangedto position the box or package 22- so'that the clip shall lie adjacentsaid abutment 36. This guide face 76 extends transversely of the line ofpull on the second end portion of the band and terminates adjacenttofthat: endUportion. The opposite face 78 of thepositioning slotwhich-constitutes a channel guiderway for the box or package ispreferably [provided with clamping means 80.for clamping. the box orpackage in position'against' the; guide face 76. As illustrated in-Figures; 1 andQ,

the clamping means is-inlthe form "of a clamping plate 80' arranged tobe reciprocated by. an eccentric 82 on a spindle 83 that is journalledin the base'of thesupp'ort and carries a handle member'84. i T

The shoe of the tensioning means Lear-r;

ries at itsforward end one blade 86 of a cutting device 86, 87, whereofthe co-operating blade '87 is fixedly carried by the support at thediametral plane aforesaid at thebot tom of the gap 18.. i i A v a a v a.

The described tensioning deviceis operat ed asfollows:A'clip.24 asdescribed in the said ,cope'nding patent application has attached to itone end portion of a band 23 which is placed around the package and hasits second end 'portion' lying acrosswthe clip underneath an anchor240and between two lugs thereof, and-extending upwards. The package isthen placed-into-wthe slot 20 so that the clip liesin the recess 26andthe second end portion of-the band extends upwards in the slot 18 and isplaced the cruciform slot 51' of the tensioning means situated in theposition shown in full lines in Figure 1'. By oscillating the: lever arm57 the tensioning meansis actuated and the band tightened around thepackage,ithe reaction on the clip being taken "up by the abutment 36.

the positionshown in broken lines in Figure 1 the second end portion ofthe band will be folded backwards on itself over the said, anchor andwilllie acrossgthe cutting edge of the blades 87, as'indicated by a dotand 87 sever the band at a point'away from the clip a distanceapproximately equal tot he" radius of the arcuate support. The packageencircled by the sealed band'can berem'oved from the apparatus, and thefree endfof the= clip'can be shortf as ind cated in Figure 12, whenthe-rollers are rotated in oppositedirection, as de-' scribedhereinafter. 1 These rollers are pro; vided respectively with a co-axialspur gearwheel 116, 117 which mesh respectivelywith larger gearwheels'118, .119,'wh'ich are both driven simultaneously in oppositedirections band extending beyondthe ened by hand, if desired. Referring'now i to Figures those of the device shownin; Figures'eyl to 4, but theshoe 40 hasa cam- 90 irotatably, mounted on it instead ofintegraljt'herewith: The'levers 72 co-operating'at one endiwithj Byswinging. the shoe 40. around to the other side of the support into 6and :7; the support 15 and pawl and ratchet tensioni-ng means 54, -and56 of this modified tensions ing device are substantially, the "same: as

the plung'ersi 64'acarryl at their other ends anti-friction rollers 74which, whenthe shoe 40. is in the position shown in Figures 6 and 7, canbe forced apart to operate the plungers 64 by rotating the cam bymeans.of its handle member 92. ,When the levers 72 are. rocked by thecam'90an arm 94 of a belhcrank lever94, 95 -thatis fulcrumed on the supportat 96 is also rocked, so that the arm 95, which carriesa movablecutter'blade 186:that co-operates witha fixed cutter'blade' 87, operatesto sever the second end portion of thebandafter the clip. has beensecured on the band Inl this construction the clamping plate'80tiscarried by a SCI'BWQ98 to the face. 76. If desired, .the lever 94,95Ican.::be dispensed-with,- and "the cutting device186, 87 may bearranged as described with jreferencetoFigures'1to4. 1

a Referring nowito Figures 8 to 12' a sup-f '80 movable in the jaw oftheisupport opposite port-10 0 of 'Li shap e is provided withithe guideface 76 aforesaidifor thepackage22, whilst its face 102 at right angles?thereto has said recess'226 for receiving a clip. This construction ofsupport, obviates the use? of a slot 20 which limits the device to usewith packages-of: certain sizes, and enables the device to bewplacedwith the face 76 horizo'ntally onthetop face-ofpackages of'any si'ze'andwiththe face 102; bearing against a vertical side @of the package. a a

The tens oning meansv comprising the shoe 40 is similar to thatdescribed above with reference to Figureslto 4, but: a stop 104" isfixedon the shoe;40.in such a position thatthe handle :member'f57 canbear against it i and, swing the tensioning, means from its startingposition shown'in full lines in Figure8 roundzto the other side'of thearcuate guide 16 to its second endposition indicated in br'oken lines"in-Figure '8.- In this position thejhandle member 57can rest on a stop106;

fixed at the end ofthe longerlimb'of the support. The ratchet wheel154of the tensioningfmeans is c'o-axial with a'spur gear wheel 108-whichmeshesZ'with-a gear wheel 109 fast on the spindleof the slotted boss'50:- H

In this kqhdfitibhl the sealingmeans comprises apair of-mutilatedrollers 110,

111 carried each by a vertical pivot pin 112',

113, respectively, journalled in the support atropposite sides of theyrecess 226, and in sucha positionfthat a flat face 114 on'eachrollerservesflto close the clip on the band,

by a toothed segment 120 formed or prowhereof the arm 195 carries ablade 186. A.

spring 128 anchored at one end to a handle member 130 on the support hasits other end attached to the prong 123 and tends to hold thesealingimeans and cutting device in the position shown in Figures 8 and9.

. After'the tensioning means has been swung into its upper positionshown in broken lines in Figure 8 and the actuating member 124 is movedagainst the action of its spring 128, the sealing means and cuttingdevice are operated in unison, by turning the hand lever 124 about itspivot 122 in a counterclockwise direction as viewed in Figure 9. Thismovement of the lever 124 causes rotation of the gear wheels 118, 119which operate the sealing rollers 110, 111 by means of their pinions116, 117, and at the end of the sealing operation, the lever arm 195carrying the movable blade 186 has moved ansrularly so far, owing to itsconnection by the rod 126 with the lever 124, that the movable blade 186co-operates with the fixed blade 87, so that the cutting device does notsever the band until the clip has been fastened upon it.

In each of the constructions described above, the tensioning means is somounte on the support that whilst maintaining the tension on the'band itcan swing through 180 or more along a semi-circular path whereof theaxis is at the clip and lies across the width of the band.

It will be appreciated that in each of the constructions described abovean end portion of the band extends across one of the cutter blades whenthe band has been tightened and folded on itself, and that in theconstruction shown in Figures 8 to 12 the band is severed close to theclip.

Various modifications may be made in the details of constructiondescribed above without departing from the scope of the invention. r

I claim:

1. A tightening device of the character described comprising incombination a support having a face which is to lie against a side of apackage to be encircled by a band, n whichface is a recess for receivinga clip in a position in which it lies close to said side of the package,which cliphas an anchor over which the band may be bent backwards, andto which clip one end portion of the band is to bepreliminarilyattached, a tensioning means which is mounted on the support, and towhich the second end portion of the band extending across the clip istobe attached, which tensioning means is arranged to swing, whilstmaintaining the tension on the band, along a semi-circular path whereofthe axis is at the anchor of the clip and lies across the band.

'2. A tightening device of the character described comprising incombination a support having a face which is to lie against a side of apackage to be encircled by a band, in which face is a recess forreceiving a clip in a position in which it lies close to said side ofthe package, which clip has an anchor over which the band may be bentbackwards, and to which clip one end portion of'the band is to bepreliminarily attached, a tensioning means which is mounted onthe'support, and to which the second end portion 7 of the band extendingacross vthe clip is to be attached, and an abutment on said supportarranged to take up the reaction due to the pull of the tensioning meanson the band and hold the clip against movement by the band whilst theclip is being secured in position on the band, which supportcomprises atleast one arcuate guide along which the tensioning means is arranged toswing about an axis that is situated at the anchor of the d side of thepackage, which clip has an anchor over which the band may be bentbackwards, and to which clipone end portion of the band is to bepreliminarily attached, a tensioning means which is mountedon thesupport, and to which the second end portion of the band extendingacross the clip is to be attached, and'an abutment on said sup portarranged to take up the reaction due to the pull of the tensioning meanson the band and hold the clip against movement by the band whilst theclip is being secured in position on the band, which support comprisestwo parallel arcuate guide members spaced apart to accommodate thesecond end portion of the band between them, alongwhich guide membersthe tensioningmeans is arranged to swing about an axis that is situatedat the anchor of the clip and lies across the band.

4. A tightening device of the character described comprising incombination a sup- 7 port having a face which is to lie against a sideof a package to be encircled by a band,

in which face is a recess for receiving a clip in a position in which itlies close to said side of the package, which clip has an anchor overwhichthe band may be bent backwards,

and to which clip one end portion of the band is to be preliminarilyattached, a tensioning means which is mounted on the support, and towhich the second end ortion of the band extending across the clip is tobe attached, and an abutment, on said, support arranged to take up thereaction due to the pull of the tensioning means on the band and holdthe clip against movement by the band whilst the clip .is being securedin position on the band, which support comprises two parallel arcuateguide members spaced apart to accommodate the second end portion of thehand between them, along which guide members the tensioning means isarranged to swing about an axis that is situated at the anchor of theclip and lies across the band, which recess is formed in two parts, onein each of said guide members. 5. The combination with a support havinga recess for receiving a clip to which one end portion ofthe band is tobe attached, a tensioning means which is mounted on the support andtowhich the secondend portion of the band extending across the clip isto be attached, andan abutment on ing means comprises a pair ofmutilated common to said sealing meansand said'cut-f ting device,toothed wheel gearing opera ture. 7 7 v a DANIEL AMBROSE BRADLEY;

said support arranged to take up thereaci In testimony whereof I afiixsigna- I rollers geared together to rotate in o posite directions andarranged to press an close the clip on the band. a a

6. The combination with a support having a recess for receiving aclip'to which one end portion of the band is to be attached, atensioning means which is mounted on the support and towhich the secondend portion of the band extending across the clip is to be attached, andan abutment on said support arranged to take up the reaction due to thepull of the tensioning means on the band, of sealing means mounted onthe support for closing the clip on the band while the latter is undertension, and a cutting device arranged to sever the second end portionof the band when the clip is secured on the band, which sealing meansand cutting device have an actuating member common to them both.

7. The combination with a support having a recess for receiving a clipto which one end portion of the band is to be attached, a tensioningmeans which is mounted on the support and to which the second endportion of the band extending across the clip is to be attached, andanabutment on said support arranged to take up the reaction due to thepull of the tensioning means on the band, of sealing means mounted onthe support for closing the clip on the band while the latter is undertension, and a cutting device arranged to sever the second end'portionof the band when the clip is secured onthe band, an actuating member

